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by GauntletWizard
3119 days ago
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A port doesn't actually get consumed by a TCP connection. Connections are uniquely identified by a (host, port, host, port) combination; i.e. my machine with IP 1.1.1.1 and yours with 2.2.2.2 can have only 2^32 connections between us (slightly less in practice). Even assuming I have a webserver, so my port is fixed to 443, your machine can connect from each of those 2^16 ports - as can every other of the 2^32 machines on the network. In practice, you're limited by memory, not port numbers. Many machines I know of regularly have connection counts in the hundreds of thousands. |
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